CN1368034A - Tooth decolorizer harmless for dental enamel blenching liquid and its using method - Google Patents
Tooth decolorizer harmless for dental enamel blenching liquid and its using method Download PDFInfo
- Publication number
- CN1368034A CN1368034A CN01141806.0A CN01141806A CN1368034A CN 1368034 A CN1368034 A CN 1368034A CN 01141806 A CN01141806 A CN 01141806A CN 1368034 A CN1368034 A CN 1368034A
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- tooth
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Classifications
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- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0208—Tissues; Wipes; Patches
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/22—Peroxides; Oxygen; Ozone
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/38—Percompounds, e.g. peracids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/817—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
- A61K8/8176—Homopolymers of N-vinyl-pyrrolidones. Compositions of derivatives of such polymers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
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Abstract
The invention discloses a tooth decolorizer harmless for dental enamel blenching liquid and its using method. A dental bleach that includes a bleaching agent and a thickening agent. The bleaching agent is typically a peroxide and the thickening agent is polyvinylpyrrolidone. A viscous or sticky dental bleach results. Optionally, a basic agent, light or heat may be added to accelerate bleaching. Bleaching may take place with the use of a dental tray. Bleach may be placed into the dental tray from a single barrel, double barrel or multi-barrel syringe containing the components of the bleach. Bleach may be placed against a flexible strip which is placed onto teeth to be bleached.
Description
Technical field
The present invention relates to dental bleaching liquid and method of bleaching tooth.More particularly, the present invention relates to place in the dens supporter or be attached on the patient's tooth not damaging under the enamel situation of patient's tooth to produce blast, brighten viscosity dental bleaching liquid with clean effect.
Background technology
The medical skill that brightens vital tooth and devital tooth with peroxide is known more than 40 years.From the mankind itself, human teeth patterning and color are varied.The color of human teeth common adularescent, black, Lycoperdon polymorphum Vitt, brown and yellow.Environment, nutrition, medical treatment and diet can influence the color of tooth.Some food such as Pericarpium Citri tangerinae, the fruit of Cranberries, coffee ﹠ tea can change the primitive color of tooth a lot.Other custom as long-term smoking or chewing tobacco can make people's tooth blackening.Tetracycline and other medicine have the blackening of making it to tooth or become the effect of ash.The child that phenolics was taken the women 's fertility of tetracycline has the tooth of permanent pollution usually.Tetracycline pollutes on tooth can produce obvious clumsy striped.
Along with economic level and growth in the living standard, people are to the increase in demand of the pure white tooth of light.In developing country and developed country, the outward appearance of people's tooth can be to its social status, and inter personal contact and job opportunity produce positive or negative influence.In general, white tooth is more welcome than black tooth tooth.Because tooth is white more, welcome more usually, so designed many materials that make people's teeth whitening with chemical method.
The chemical substance that can make us accepting that is generally used for whitening teeth now is a peroxide.Peroxide is known in the industry as oxidant and very high reactivity is arranged.The luminous reflectance of specific wavelength is returned the normally very complicated molecule of organic molecule of our eyes.We are called dyestuff and pigment with these colorful substance usually.These organic dyestuff and pigment oxidation can be damaged its light-absorbing ability usually, thereby it presents white.For example, with hydrogen peroxide the brown pulp bleaching is become white wood pulp in the paper-making industry.
Preferably use peroxide as brightener for tooth, because consider from physiological angle, they are usually than other oxidant safety.Select as the peroxide of teeth whitening to be: hydrogen peroxide, urea peroxide, sodium perborate and mistake (two) sodium carbonate.When these peroxide contacted suitably with tooth, they can make tooth present white the organic pollution oxidation of tooth inner surface and outer surface usually.On the contrary, peroxide can not influence inorganic pollution usually.For the people who belongs to the inorganic pollution tooth, use peroxide not have whitening effect usually.But most in the world people can both play whitening effect to tooth by using peroxide.
Be essentially human and accepted because peroxide is used for teeth whitening, so designed the method for many application peroxide bleachings.A kind of application process is that the aqueous solution with peroxide directly is coated on the tooth.Using the problem of the aqueous solution of peroxide is its too rare or easy loss.This will cause it to be lost to from tooth on the soft tissue in oral cavity owing to action of gravity.The peroxide meeting twinge soft tissue of high concentration causes serious discomfort to the patient.The aqueous solution of peroxide is coated in method " indoor " method normally on people's tooth, because the most basic difficulty of patient is to be difficult to it is applied on the tooth of oneself.In most of the cases, in the entire process process, patient's lip will painfully shrink, and is limited to be sitting on the dental chair.When using peroxide and water liquid lime chloride, usually exist peroxide contacts soft tissue with liquid lime chloride outflow tooth danger.
In the bleaching processing procedure, can improve patient's comfort level by shortening bleaching time.The method that in general, three kinds of rapid bleach teeth are arranged.First method is to improve the concentration of peroxide.Second method is the pH value that increases peroxide with alkaline matter.Alkaline matter such as sodium hydroxide make the peroxide solutions instability, therefore can make the reactivity of peroxide stronger, so can carry out discoloration fast.The third method is to come more quickly with dental bleaching by the speed that the peroxide solutions heating is improved course of reaction.Heating can promote all chemical reactions that comprises bleaching.In order to shorten the bleaching processing time, can use or expand any one or its combination in the said method.
But the physiological problem that the acceleration bleaching process brings is: the first, and when the peroxide concentrations in the bleaching liquid increased, bleaching liquid had bigger stimulation to soft tissue.The second, when the pH value in the bleaching liquid increased, bleaching liquid had bigger corrosivity to soft tissue.The 3rd, when the temperature in the bleaching liquid increases, easier soft tissue even the breaking-up tooth of burning of bleaching process.
The loss of peroxide aqueous solution is bleached the problem that exists in the processing procedure with acceleration and is promoted the dental care personnel to make dental bleaching liquid not contact soft tissue.This point for example uses rubber dam to realize by well-known method in the dentistry.Yet, at first, being accompanied by sheathed foraminous sheet rubber or the rubber dam of beating in advance on each tooth, patient's lip can painful contraction.The process of sheathed rubber dam is slowly on each tooth, and can not guarantee sheathed rubber dam to seal fully and prevent that peroxide aqueous solution is leaked on the soft tissue.In order to satisfy the patient fast and realize the demand of dental bleaching, the dentist higher bleaching liquid of working concentration of must taking a risk up hill and dale.During dental treatments,, need use up and carry out dental bleaching between 2 to 5 round-the-clocks and observe impressive progress in brightening in order to use the bleaching liquid that in essence soft tissue is not had stimulation.It will be very uncomfortable that the contraction that the patient is accompanied by cheek in the period of bleaching teeth is limited to be sitting on the tooth chair, and the cost of this dental procedure will be very expensive.
Use peroxide aqueous solution to spread upon that the method for bleaching teeth exists the problem of essence on the tooth, and recognize that these problems can impel the dental bleaching medical skill that important progress takes place.These problems can improve by add the chemical substance that can strengthen viscosity in peroxide solutions.By increasing the viscosity of bleaching liquid, bleaching liquid runs off or the ability of drippage can descend.For example (commodity on market are called " CARBOPOL for glycerol, high-molecular weight Polyethylene Glycol, pyrogenic silica, high-molecular weight polypropylene glycol, xanthan gum, hydroxy propyl cellulose and carbopol preparation
") these materials have been used substantially to increase the viscosity of peroxide solutions.
The ill-effect that contacts with soft tissue in order to reduce the bleaching gel to run off is regulated about the pH value to 7 of peroxide aqueous solution.When the concentration of peroxide reduces,, need the patient that bleaching liquid is abutted on their tooth for more time in order to obtain the whitening effect that the patient wants.This point realizes that by using a kind of dens supporter this dens supporter can make bleaching liquid fully contact with tooth and can stop bleaching liquid to run off and the contact soft tissue from tooth.
The misery contraction of using dens supporter to make bleaching liquid and tooth keep fully contacting for a long time and not needing the patient to be sitting in to be accompanied by cheek on the tooth chair.When using dens supporter to make bleaching liquid contact tooth for a long time, the peroxide of the low concentration in the bleaching liquid is fully utilized, and has therefore reduced the danger of peroxide contact soft tissue.To be an energy abut in arc shape container on the tooth with albic material to dens supporter.Dens supporter also can stop by the saliva dilution bleaching liquid in a short time and stop the consequence of swallowing bleaching liquid.
The material that is used in the enhancing viscosity in all bleaching gels at present nearly all is that (commodity are called " CARBOPOL to the carbopol preparation
"), it is made by B.F.Goodrich. company.CARBOPOL
Be a polyacrylic acid hydrophilic polymer that is modified, can form mass concentration in the viscous gel more than 5%.In the manufacturing of present bleaching liquid, select CARBOPOL
Material is because it can make the peroxide solutions thickening, says that from this point peroxide solutions can not flow out dens supporter and can not leave tooth in other words and contact soft tissue.This makes the time lengthening that bleaching liquid and tooth fully contact, and has protected soft tissue.The use of dens supporter and viscosity bleaching liquid makes the bleaching liquid of low concentration effectively brighten patient's tooth in 1 to 2 week and patient's harm is reached bottom line.In 4 to 8 hours bleaching process, CARBOPOL
Basically be unique selecteed material, be used to provide the high viscosity attribute that needs.
Pyrogenic silica be a kind of available thickening agent but it is used on the dentistry is a kind of selection of bad luck.Pyrogenic silica is indissoluble in peroxide solutions, so it only is suspended in the solution.When the silicon dioxide consumption was higher, peroxide solutions can become putty rather than viscous gel.The problem that putty brings is that it can not can not make tooth suitably brighten smooth and easy the flowing of around teeth.Silicon dioxide also absorbs peroxide solutions, has influenced the character of peroxide like this so that it is unfavorable for bleaching.Disadvantageous wick effect also can take place for peroxide solutions in silicon dioxide.When the bleaching liquid of silicon dioxide thickening is on spreading upon tooth, can be dry rapidly, well-known exsiccant peroxide does not have discoloration.Therefore can think substantially that the thickening agent of doing the dens supporter bleaching with silicon dioxide is a kind of selection of bad luck.
Also there is other natural gum can consider the thickening agent of bleaching as dens supporter.For example materials such as xanthan gum, pectin, guar gum and hydroxy propyl cellulose were considered in the past.Though natural gum is widely used as thickening agent in food industry, yet it also is a kind of selection of bad luck as thickening agent in dental bleaching.Though the natural gum of low concentration is fit to the thickening bleaching liquid, it is still soft, drips easily in the time of on abutting in tooth.The natural gum of high concentration tends to become the gel body.Gelatin is difficult for flowing and often forming bulk, has therefore limited in around teeth and has fully flowed and the ability of effective bleaching teeth.Just for this reason, natural gum is not the thickening agent of unique use in the viscosity bleaching liquid.Dentistry has concluded that substantially natural gum is not the desirable reagent of dens supporter bleaching.Other thickening agents that are used for dentistry are high-molecular weight water soluble wax, for example Polyethylene Glycol.Yet water soluble wax is not the unique thickening agent that is used for peroxide solutions, because its thickening is insufficient.Use high concentration water soluble wax, bleaching liquid is still soft and can not keep the attribute of gel.The not high easy outflow dens supporter of making by water soluble wax of bleaching liquid viscosity.Therefore, being used for the water soluble wax of thickening peroxide solutions is not the desirable reagent of dens supporter bleaching.
Compare with the shortcoming of various thickening agents, under existing dens supporter bleaching medical skill, CARBOPOL
As thickening agent is optimal reagent.CARBOPOL
Almost has the optimal thickening attribute that viscosity bleaching gel needs.Therefore, in the visible dens supporter albic material of all existing markets, select CARBOPOL widely
As thickening agent.
Although CARBOPOL
Welcome, but it also has shortcoming.CARBOPOL
It is the polyacrylic acid of cross-linked polymeric.Polyacrylic acid has structure-CH
2CH (CO
2H)-.Work as CARBOPOL
When in water, disperseing, cause mixed liquor to be acid.Acid mass-energy combines with the cation of inorganic substances and forms salt.The enamel that covers the human teeth outer surface is made up of alkali formula apatite calcium (Calcium hydroxy apatite).Alkali formula apatite calcium (Calcium hydroxy apatite) is a kind of crystalline material that is similar to ceramic structure.Resembling the acid mass-energy of acetic acid or Fructus Citri Limoniae acids and the calcium ion of our enamel surface forms salt and removes enamel.Well-known on dentistry is that the people that sucks citric acid is actually the most of enamel at their dental surface of acid etching.
Briefly, CARBOPOL
Be a long-chain that repeats acid monomers, in the time of in being dispersed in aqueous solution, its on can acid etching tooth calcium and destroy enamel.Owing to plan to contain CARBOPOL
Bleaching liquid be used for long bleaching process, make bleaching liquid contact more than a few minutes with tooth, therefore think that these bleaching liquid also can remove enamel in bleaching period of these prolongations.Think on the dentistry adamantine layer to remove tooth health for the people be deleterious and the tooth that can cause wearing and tearing causes the dental plaque point.
Contain CARBOPOL
The maker of dental bleaching liquid use alkali to improve the pH value of bleaching liquid.The alkali of selecting for use has sodium hydroxide, potassium hydroxide, triethanolamine basically.Improve the pH value of dental bleaching liquid and reduce acid degree with alkali so that minimizing removes enamel because of acid etching.Owing to known CARBOPOL
More stable in acid range, the maker of nearly all dens supporter bleaching will contain the pH value of etched bleaching liquid and be transferred to 5.5-6.5.The pH value of bleaching liquid is low more, and the enamel that removes because of acid etching is many more.Long-time bleaching has just prolonged the process of acid etching.Even pH value is that 6 solution also can be removed enamel in bleaching process.
In addition, it is difficult making a collection of pH value that is consistent with dental bleaching liquid another batch.Because in dental bleaching liquid is made, for the CARBOPOL of various mean molecule quantities
, the alkali that all needs to add specific quantity reaches fixed pH value.But, for maker, in each batch bleaching liquid, add the alkali of standard volume often.Therefore, even maker plans to make the pH value of bleaching liquid remain to 7, each batch bleaching liquid often also has various pH value.
Use CARBOPOL
Another problem be that the polyacrylic acid of long-chain self intersects to form a ball sometimes.When this situation takes place, CARBOPOL
The wetting speed of chain internal Protection part than its chain outside slowly many.This just means CARBOPOL
PH value and cause dental bleaching liquid different different because of wetting time.So, CARBOPOL
The pH value of bleaching liquid after making a week may be different day same day with manufacturing.The unique method that addresses this problem is that dental bleaching liquid maker is with CARBOPOL
After date remake the last adjustment of pH value and makes pH value stable when bleaching liquid was preserved one section.Obviously, this operation is uneconomic.All of these factors taken together all causes each batch CARBOPOL
It is difficult that the bleaching liquid of bleaching liquid and different times keeps stable pH value.
Acid etching recited above is not the sole cause that causes adamantine calcium to remove.Organic acid also can decationize by the chelating process.Carboxylic acid has with cation gives birth to salifiable affinity, and carboxylic acid is different because of cationic type to cationic this affinity.For example, carboxylic acid can form salt with alkali metal such as lithium, sodium or potassium.This affinity that forms ionic bond with alkali metal is medium, and this puts us and knows, because ionizing (dissolving) takes place in water the salt of most of organic acid and alkali metal generation.But carboxylic acid and the alkali earth metal for example affinity of beryllium, magnesium or calcium etc. are much better than.This affinity of alkali earth metal and carboxylic acid is very strong, because the salt that most of organic acid and alkaline-earth metal generate ionizing can not take place in water.Therefore organic acid is big with sodium or potassium with the bonded affinity ratio of calcium.Identical principle is applied to corona and the cemental cementation of glass ionomer.Because polyacrylic acid (still not neutralizing no matter neutralize) can react with the alkaline earth metal cation of ion leaching glass, so the corona cementation can take place.If in mixed liquor, add calcium hydroxide like this, originally generate the organic acid of sodium salt by the sodium hydroxide neutralization, can transfer to generate calcium salt.
Be dispersed in the CARBOPOL in the water
If can not be settled out this polymer, just can not neutralize by calcium hydroxide.Therefore, there is not a kind of CARBOPOL
Bleaching liquid is to come neutral with calcium hydroxide.Nearly all CARBOPOL
Bleaching liquid is all regulated pH value with sodium hydroxide or potassium hydroxide.
CARBOPOL
Be to generate alkali salt or adamantine calcium salt, a competition is arranged between this.CARBOPOL
The carboxylic acid alkali salt in, adamantine calcium salt has a higher binding energy relatively.Therefore, CARBOPOL
The alkalescence bleaching liquid can be removed calcium from enamel by the chelating process usually.
Although CARBOPOL
In the dens supporter method bleaching of tooth, can provide viscogel very effectively, but it for thirsting for more beautiful tooth, those is wasting in the negative effect aspect acid etching enamel and the chelating.The illeffects that the technology of bleaching about existing enamel relates to can be recognized from following article: " U.S.'s stomatology magazine " 291301 pages of (1) 1998 year the 2nd the 6th phase of volume of December, by Perdigao, J., " about the interactional various types of researchs between dental mastic and the use urea peroxide bleaching enamel " that et al. writes, (2) among " Braz. stomatology magazine " 7 (2) 75-79 (1996), Pinheirojunior, E.C., " illeffects of the urea peroxide gel bleach on the various human dental enamels that are used for little hard " that et al. writes, " international succinct " 39-44 page or leaf of (3) 1993 years the 24th the 1st phases of volume, Shannon, " the enamel exposure concentration is that the effect of 10% urea peroxide bleaching liquid is described " that etal writes, " basic stomatology " 84-88 page or leaf of (4) 1998 year 1-2 month, " electronic scanner microscope is for the research of bleach to the long-term adverse effect of enamel surface " that Bitter, N write.
Summary of the invention
Therefore, the problem that existing enamel bleaching medical skill exists be dental bleaching liquid and use in thickening agent gellant acid etching enamel or with enamel reaction, and damage enamel surface.
For addressing the above problem, the present invention is achieved through the following technical solutions:
A kind of delivery system that is used for the teeth whitening material is distributed to a plurality of adjacent teeth front side is characterized in that: delivery system wherein is transparent and almost is not aware of that described delivery system comprises basically when using:
A., enough elastic strip elastomeric material is arranged, and to form curved shape on a plurality of teeth, when described delivery system was close to tooth, described strip material was easy to make dental surface and slot to feel comfortably cool; With
B. be applied to the teeth whitening material on the described strip material, when described delivery system places on the described dental surface, the described material that brightens contacts with described dental surface, produce active matter from the teeth outwards, the described material that brightens also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time, so that described active matter acts on described dental surface between described strip material and described surface;
Wherein said teeth whitening material comprises following substances:
Bleach, this bleach can discharge oxidant, this oxidant can with reactive organic molecule on people's dental surface and
Thickening agent, this thickening agent comprises a certain amount of polyvinylpyrrolidone and liquid component.
Except above-mentioned essential features, the also additional following technical characterictic of this technical scheme:
Wherein, the substantially invariable elastic stiffness that is lower than about 5g/cm that the test method of the useful ASTM D2923-95 of described strip material is measured on Handle-O-Meter.
Wherein, described strip material can reclaim from described deformation state under not having the cohesive force that is produced by described teeth whitening material.
Wherein, described strip material is that water is impervious basically.
Wherein, described teeth whitening material is a gel.
Wherein, described teeth whitening material is evenly to be coated in continuously on the described strip material basically.
Wherein, described strip material and apply the gross thickness of teeth whitening material thereon less than about 1mm.
Wherein, have the peeling force of strip material of described teeth whitening material less than 50g.
Wherein, described strip material has shallow chamber in the coating substance side of this strip material, and the teeth whitening material that is placed in one is arranged in this shallow chamber.
Wherein, described strip material is the polyethylene film of nominal thickness less than about 0.1mm.
Wherein, also comprise release liner.
The present invention can also use following technical scheme:
A kind of the teeth whitening material is distributed to the method for a plurality of adjacent teeth front side, it is characterized in that: described method comprises the steps:
A. the teeth whitening material is applied on the strip material, this strip material has enough elasticity, and forming curved shape around a plurality of adjacent teeth, and this strip material is easy to make dental surface and slot to feel comfortably cool and can make its permanent deformation; With
B. the described strip material that has described material on it is applied on described a plurality of adjacent tooth, and described strip material does not have permanent deformation, described material is contacted with described surface, described material produces active matter on described a plurality of adjacent teeth, described material also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time, so that described active matter acts on described surface between described strip material and described a plurality of adjacent teeth;
Wherein said material comprises following substances:
The bleach of about 0.5wt%-60wt%, this bleach comprises and is selected from hydrogen peroxide, urea peroxide, the peroxide of sodium perborate and mistake (two) sodium carbonate, this bleach can discharge oxonium ion, described oxonium ion can with the reactive organic molecule on people's dental surface, this be for produce whitening effect and
The polyvinylpyrrolidone thickening agent of about 0.2wt%-60wt%, this thickening agent comprise a certain amount of polyvinylpyrrolidone and the liquid component that mixes the formation gel, and described liquid component is selected from water, glycerol, propylene glycol, liquid polyethylene glycol, liquid propylene glycol and ethanol.
The present invention can also use following technical scheme:
A kind of delivery system that is used for the teeth whitening material is distributed to a plurality of adjacent teeth is characterized in that: described delivery system comprises:
A., enough elastic strip elastomeric material is arranged, on a plurality of adjacent teeth, to form curved shape, when described delivery system was close to tooth, described strip material was easy to make dental surface and slot to feel comfortably cool, and described strip material comprises the shallow chamber of a row; With
B. be applied to the teeth whitening material on the described strip material, when described delivery system places on the described dental surface, described material contacts with described surface, on described surface, produce active matter, described material also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time, so that described active matter acts on described surface between described strip material and described surface;
Wherein said teeth whitening material comprises following substances:
The polyvinylpyrrolidone thickening agent of about 0.2%-60%,
The liquid component of about 0.2%-80%,
The bleach of about 0.5%-60% and
The alkaline matter of about 0%-10%; Described polyvinylpyrrolidone thickening agent, described liquid component and described bleach mix the formation gel.
The present invention can also use following technical scheme:
A kind of delivery system that is used for the teeth whitening material is distributed to a plurality of adjacent teeth is characterized in that: described delivery system comprises:
A., enough elastic strip elastomeric material is arranged, and to form curved shape on a plurality of adjacent teeth, when described delivery system was close to tooth, described strip material was easy to make dental surface and slot to feel comfortably cool and can make its permanent deformation; With
B. be applied to the teeth whitening material on the described strip material, when described delivery system places on the described dental surface, described material contacts with described surface, on described surface, produce active matter, described material also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time, so that described active matter acts on described surface between described strip material and described surface; Described teeth whitening material comprises following substances:
Liquid component,
As the polyvinylpyrrolidone of thickening agent and
Peroxide bleaches, this peroxide bleaches discharge oxidant with bleaching teeth; Described liquid component, described polyvinylpyrrolidone and described peroxide bleaches mix formation gel teeth whitening material, and
C. release liner.
The present invention can also use following technical scheme:
A kind of delivery system that is used for the teeth whitening material is distributed to a plurality of adjacent teeth is characterized in that: described delivery system comprises:
A. the strip elastomeric material of making by polyethylene; With
B. be applied to the teeth whitening material on the described strip material, when described delivery system places on the described dental surface, described material contacts with described surface, on described surface, produce active matter, described material also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time between described strip material and described surface, so that described active matter acts on described surface, described dental bleaching material can discharge oxidant, this oxidant can with the reactive organic molecule on people's dental surface, described teeth whitening material comprises that it contains the thickening agent of a certain amount of polyvinylpyrrolidone, liquid component and alkaline matter.
The present invention compares with existing dentistry dental bleaching medical skill, and the present invention has following advantage:
1. dental bleaching material of the present invention, it is applied on the strip elastomeric material, is used for that dental bleaching has enough viscosity and acid etching enamel or do not react with enamel not.
2. the present invention can make the tooth blast, brightens and can remove the complicated organic molecule that adheres on tartar, the oxidation tooth.
After running through description and accompanying drawing thereof for further advantages of the invention for the ordinary person in this area is conspicuous.
Description of drawings
Fig. 1 is the monomeric chemical structural formula of polyvinylpyrrolidone;
Fig. 2 is to use a part of bleaching liquid of the present invention to carry out the operation step map of bleaching teeth;
Fig. 3 inserts the sketch map that dens supporter is used for bleaching teeth with a part of bleaching liquid;
Fig. 4 is to use the operation step map of two parts bleaching liquid bleaching teeth of the present invention;
Fig. 5 puts into the sketch map that dens supporter is used for bleaching teeth with two parts bleaching liquid;
Fig. 6 is the perspective view that the flat-shaped material is centered around the tooth corner;
Fig. 7 is the perspective view of one embodiment of the invention, and the flat-shaped material that demonstrates among Fig. 6 scribbles the teeth whitening material;
Fig. 8 is the sectional view of 8-8 transversal direction in Fig. 7, and the thickness that demonstrates the flat-shaped material is than the material thin thickness that applies on it;
Fig. 9 is the sectional view of another embodiment of the present invention, demonstrates strip material and has shallow chamber, so that store the additional material that is coated on the strip material;
Figure 10 is with matched strip material of the present invention with it on each adjacent teeth, and it binds sectional view on tooth by the material between tooth and strip material;
Figure 11 is the vertical view of tooth and adjacent soft tissue, and it is the view of 11-11 transversal in Figure 10, demonstrates strip material of the present invention and is fit to tooth, and by the material between tooth and the strip material strip material is bound on tooth;
Figure 12 is and the similar sectional view of Figure 10, demonstrates strip material of the present invention and tooth and adjacent soft tissue fit, and by tooth and and strip material between material strip material is bound both sides at tooth;
Figure 13 is the vertical view of 13-13 transversal in Figure 12, demonstrates the both sides and the adjacent soft tissue fit of strip material of the present invention and tooth, and by the material between tooth and the strip material strip material is bound both sides at tooth;
Figure 14 is the perspective view of another embodiment of the present invention, demonstrates to be coated with the flat-shaped material that brightens material shown in Figure 7 and to have release liner;
Figure 15 is the sectional view of further embodiment of this invention, and it is the view of 15-15 transversal in Figure 14, demonstrates release liner and pastes on the strip material by the material on the strip material.
The specific embodiment
Dental bleaching liquid and the feature of using method and the beneficial effect of reaching thereof for harmless to enamel to the present invention have one more to understand in depth, now enumerate specific embodiments, and conjunction with figs. is described in detail as follows:
A. the material that is used for dental bleaching liquid
Preferred dental bleaching liquid can contain several compositions, and these compositions comprise bleach, alkaline reagent, thickening agent, flavoring agent, desensitizer and other material.Dental bleaching liquid of the present invention comprises bleach at least, liquid component and thickening agent.In other embodiments of the present invention, those other compositions of having enumerated above can comprising.
1) bleach
Be applicable to that bleach of the present invention comprises that all can discharge oxidant such as thereby the free radical oxonium ion contacts the material that utilizes oxidizing process to remove dirt on the tooth with tooth.Present most preferred bleach is to comprise but be not defined as hydrogen peroxide, urea peroxide, sodium perborate and cross the peroxide of (two) sodium carbonate.Except these materials, can also use other peroxide and other oxidant and bleach, perhaps replace these materials with other peroxide and other oxidant and bleach.
2, thickening agent
Cause it contact with responsive soft tissue for fear of the loss owing to dental bleaching liquid, also in order to keep contacting of bleaching liquid and tooth, preferably dental bleaching liquid comprises thickening agent.The effect of suitable thickening is the viscosity that increases dental bleaching liquid when not hindering bleach to discharge oxonium ion or not hindering those oxonium ions and the tooth that will bleach contacts.In the most preferred embodiment of the present invention, used thickening agent comprises polyvinylpyrrolidone.Fig. 1 has write out the monomeric chemical structural formula of polyvinylpyrrolidone.Polyvinylpyrrolidone is also referred to as " polyvinyl pyrrolidone ".
Polyvinylpyrrolidone is that following behavior does not take place as the advantage of thickening agent or gellant: (i) hinder bleach release oxonium ion or those oxonium ions to contact with the tooth that will bleach, (ii) chemical etching enamel, (iii) remove calcium and (iv) curing of dental bleaching liquid in the enamel by chelating.
Polyvinylpyrrolidone is uncle's amino polymer.Do not contain organic acid in its structure, so it can acid etching and chelating tooth.Because the polyvinylpyrrolidone bleaching liquid is to not damage of enamel, so compared with prior art be very large improvement.Polyvinylpyrrolidone is easy to be dispersed in the high viscosity gel that forms about 5wt%-40wt% that can carry out the dens supporter bleaching in the water.Can also think that polyvinylpyrrolidone is a kind of viscosifier,, it be had adhere to or the bonding sense that this just can make it stick on the tooth bleaching in the needed time because increase by the viscosity of the dental bleaching liquid of its production.
The optimal molecular weight that is used for the thickening agent of bleaching liquid is about 90000-1500000.Available light scattering method, size exclusion chromatography (SEC) or other method determining molecular weight.As shown in the Examples, also can use molecular weight not at the thickening agent of this scope.Total rule is: the molecular weight of used polyvinylpyrrolidone is more little, reaches required denseness and the amount of the polyvinylpyrrolidone that needs is many more.
3, liquid component
Thick polyvinylpyrrolidone is a white powder.In order to form the gel that is applicable to dental bleaching liquid, must add liquid component.In certain preferred embodiments of the present invention, the liquid component of suitable gel comprises water, glycerol, propylene glycol, liquid polyethylene glycol, liquid propylene glycol, ethanol and other suitable liquid component.All these liquid components can use separately or be used in combination.
4, alkaline matter
In some embodiments of the present invention, ideal dental bleaching liquid will comprise alkaline matter.Use alkaline matter can make bleach such as peroxide instability, promote to discharge oxonium ion for dental bleaching.If use two parts bleaching system as shown in Figure 4 and Figure 5 and especially need alkaline matter during as the use of the appended text description of Fig. 4.The alkaline matter that can be used among the present invention can list: sodium hydroxide, potassium hydroxide, calcium hydroxide and triethanolamine.
5, flavoring agent
In some embodiments of the present invention, need in dental bleaching liquid, to add flavoring agent or sweetener.Suitable sweetener example comprises phenylalanine, saccharin sodium, mannitol, fructose, Sorbitol, xylitol etc.Spendable flavoring agent comprises Herba Menthae, Herba pyrolae japonicae, spearmint, Fructus Fragariae Ananssae, Fructus Citri Limoniae, sour lime etc.
6, desensitizer
Even when some patients did not use acid etching dental bleaching liquid of the prior art, their tooth and gingiva also had chronic sensitivity.The dental bleaching liquid that comprises desensitizer by use can partly alleviate its sensitivity, makes the patient not have sense of discomfort or fear in bleaching process.The example of desensitizer comprises fluoride, potassium nitrate, sodium citrate, Aloe vulgaris etc.
7, other composition
If desired, also comprise other composition in the bleaching liquid, these other compositions comprise known anti-caries agent and antibacterial in the industry.
8, the embodiment of dental bleaching liquid of the present invention
Be the sample composition of some dental bleaching liquid of the present invention below.Use the compositions of these dental bleaching liquid of bleach and polyvinylpyrrolidone thickening agent, the variation that it is made, or other compositions is all in protection scope of the present invention.Percentage by weight wherein refers to the percent of composition weight in whole finished product bleaching liquid weight.The embodiment of dental bleaching liquid
In certain preferred embodiments of the present invention, the percent of various compositions can be done following variation:
The content of the composition of dental bleaching liquid also can be other scope.
| Embodiment | Bleach | Thickening agent | Liquid component | Alkaline matter | Flavoring agent | Desensitizer |
| 1 | The about 11wt% of urea peroxide | Polyvinylpyrrolidonemolecules molecules amount 1,000,000-1,500,000, about 25wt% | The about 29wt% of the about 35wt% glycerol of water | Do not have | The about 0.5wt% of the about 0.5wt% Oleum menthae of aspartame | Do not have |
| 2 | The about 16wt% of urea peroxide | Polyvinylpyrrolidonemolecules molecules amount 1,000,000-1,500,000 about 30wt% | The about 54wt% of water | Do not have | Do not have | Do not have |
| 3 | The about 21wt% of urea peroxide | Polyvinylpyrrolidonemolecules molecules amount 44,000-54,000 about 30wt% | The about 49wt% of glycerol | Do not have | Do not have | Do not have |
| 4 | The about 25wt% of urea peroxide | Polyvinylpyrrolidonemolecules molecules amount 1,000,000-1,500,000 | The about 10wt% of the about 10wt% glycerol of water | Do not have | Do not have | Do not have |
| About 30wt% | ||||||
| 5 | The about 3wt% of hydrogen peroxide | Polyvinylpyrrolidonemolecules molecules amount 28,000-34,000 about 40wt% | The about 42wt% of the about 10wt% Polyethylene Glycol of the about 15wt% glycerol of water (molecular weight 600) | Do not have | Do not have | Do not have |
| 6 | The about 5wt% of hydrogen peroxide | Polyvinylpyrrolidonemolecules molecules amount 1,000,000-1,500,000 about 25wt% | The about 10wt% of the about 56.39wt% Polyethylene Glycol of water (molecular weight 600) | Do not have | The about 0.5wt% Artificial grape of saccharin sodium flavoring agent, about 3wt% | The about 0.1wt% of sodium fluoride |
| 7 | The about 25wt% of sodium perborate | Polyvinylpyrrolidonemolecules molecules amount 44,000-54,000 about 25wt% | The about 50wt% of Polyethylene Glycol | Do not have | Do not have | Do not have |
| 8 | The about 25wt% of sodium perborate | Polyvinylpyrrolidonemolecules molecules amount 1,000,000-1,500,000 about 10wt%; Polyvinylpyrrolidonemolecules molecules amount 44,000-54,000 about 10wt%; | The about 55wt% of anhydrous glycerol | Do not have | Do not have | Do not have |
| 9 | The about 10.5wt% of urea peroxide | Polyvinylpyrrolidonemolecules molecules amount 100,000-150,000 about 10wt% | The about 30wt% of the about 10wt% polyethylene glycol of the about 2wt% polyethylene glycol of the about 35.69wt% ethanol of water (molecular weight 300) (molecular weight 8000) | Do not have | The about 1wt% of the about 0.5wt% wintergreen oil of aspartame | The about 0.1wt% of the about 0.25wt% potassium nitrate of sodium fluoride |
| ??10 | The about 15wt% of urea peroxide | Polyvinylpyrrolidonemolecules molecules amount 1,000,000-1,500,000, about 25wt% | The about 39.8wt% of the about 20wt% anhydrous glycerol of water | The about 0.2wt% of sodium hydroxide | Do not have | Do not have |
| The composition of dental bleaching liquid | Wide region | General range | Preferable range |
| Bleach | 0.1-80％ | 0.5-60％ | 1-50％ |
| Bleach is a urea peroxide | 0.5-80％ | 1-50％ | 3-25％ |
| Bleach is a hydrogen peroxide | 0.1-50％ | 0.5-25％ | 1-5％ |
| Liquid component | 0.1-99.8％ | 0.2-80％ | 10-50％ |
| Polyvinylpyrrolidone | 0.1-90％ | 0.2-60％ | 1-35％ |
| Alkaline matter | 0-10％ | 0.1-9％ | 0.2-6％ |
| Flavoring agent | 0-5％ | 0.5-3％ | 1-2％ |
The pH of mixed gel is 5-8 preferably, is more preferably 4-10.Other pH value scope also can.
Preferably a kind of like this viscogel of finished product dental bleaching liquid of the present invention, its denseness be enough to make its not from general clinic with or the syringe of the model of home-use dental bleaching drip the about 2mm-10mm in the aperture of this syringe needle.Dental bleaching liquid that also can other viscosity produced according to the present invention.B, carry out the method for dental bleaching
Consult Fig. 2, it illustrates a kind of method that patient's tooth is bleached.At first, for example utilize to go up a kind of in the surface compositions and obtain or prepare a kind of dental bleaching liquid 201 that contains polyvinylpyrrolidone.The big multipotency of patient or patient's dentist obtains the dental bleaching liquid that can directly use according to Fig. 3 and method shown in Figure 5 from the pharmacists.In second step, dental bleaching liquid is placed dens supporter 202.This bleaching liquid should uniform distribution in dens supporter, and its consumption should be enough to cover the outer surface of all teeth.Dens supporter is not preferably designed for can produce any or excessive mechanical pressure to patient's tooth or gingiva.In the 3rd step, the dens supporter that will contain bleaching liquid places above the tooth that will bleach, makes bleaching liquid contact 203 with tooth.The suction that dens supporter is placed on the generation on the tooth adds that the viscosity of bleaching liquid can make dens supporter be attached on the tooth in bleaching process.Then, optionally dental bleaching liquid is stood illumination or heats 204, this is in order to accelerate the release of its oxidant such as oxonium ion.Heating can promote all chemical reactions that comprises dental bleaching.Some dentists can use up and produce heat.More operable light comprise halogen light, xenon light, plasma arc light, ion gas laser, semiconductor laser and light emitting diode.No matter use up still heating, next, dental bleaching liquid can discharge oxidant such as oxonium ion 205.When oxidant contacts with tooth, can be with dental bleaching, make the tooth blast, brighten, or remove dirt 206 on the tooth.The time that step 205 and step 206 need changes, but normally 1-8 hour.The short again and long again time also can.Use more alkaline matter or can accelerate these steps heating of dental bleaching liquid application or light.Also can accelerate these steps by the bleach that uses higher concentration.Then, dens supporter is removed 207, flushing tooth 208.If use strong bleach, this series of steps can be finished in that dental clinic is disposable.Also can divide at home several times and carry out by the patient.The patient normally carries out blanching step one time interior every day in two weeks, optionally maintains thereafter.
With reference to Fig. 3, this illustrates and dental bleaching liquid 305 is placed dens supporter 303 and dens supporter 303 is placed on patient's tooth 301.The arc 304 that dens supporter 303 has the radian with patient's tooth to be complementary closely contacts and can not make it to contact with important soft tissue 302 with patient's tooth 301 so that hold dental bleaching liquid 305 and make it.If use the peroxide bleaching of high concentration, then can use the tooth barrier, rubber protector or fluid light ripening acrylic acid (fluid light-cured acrylic barrier) baffle plate avoids dental bleaching liquid to contact with soft tissue.In general, when the concentration of hydrogen peroxide greater than 15%, perhaps the concentration of urea peroxide needs to use in addition the soft tissue protector of some type greater than 40%.Dens supporter can be elastic or inflexible, and available suitable material such as plastics or rubber are made.In dental laboratory, can be made into dens supporter, size is accurately consistent with patient's tooth, can be universal tray so that a kind of size can be fit to all teeth, or the patient by as in hot water, dens supporter heating is pressed in tooth the inside then and with own be the dens supporter that is molded as.
The single chamber injector 307 that provides has the chamber 307a that holds dental bleaching liquid.From syringe needle 307c, release the dental bleaching liquid 305 of requirement with piston 307b.The pH of the dental bleaching liquid 305 in the syringe preferably is no more than 7, otherwise bleach is before use with instability.
With reference to Fig. 4, this illustrates another kind of method of patient's tooth being carried out dental bleaching.When this method is used to use two parts dental bleaching liquid.At first, for example utilize to go up a kind of in the surface compositions and obtain or prepare two parts dental bleaching liquid 401 that contains polyvinylpyrrolidone.The big multipotency of patient or patient's dentist obtains the dental bleaching liquid that can directly use according to method shown in Figure 5 from the pharmacists.Should be noted that syringe has two chambers that hold this two parts dental bleaching liquid.The component of this two parts dental bleaching liquid must be mixed in order to using 402.In second step, mixed two parts dental bleaching liquid is placed dens supporter 403.In the 3rd step, the dens supporter that will contain bleaching liquid places above the tooth that will bleach, makes bleaching liquid contact 404 with tooth.Then, optionally dental bleaching liquid is stood illumination or heats 405, this is in order to promote the release of its oxidant such as oxonium ion.No matter use up still heating, next, dental bleaching liquid can discharge oxidant such as oxonium ion 406.When oxidant contacts with tooth, can be with dental bleaching, make the tooth blast, brighten, or remove dirt 407 on the tooth.Then, dens supporter is removed 408, flushing tooth 409.
With reference to Fig. 5, this illustrates the using method of dental bleaching liquid allotter such as dual chamber syringe 507.Dual chamber syringe 507 has the first chamber 507a and the second chamber 507b.Although also can use two dual chamber syringes that chamber volume is different,, preferably use two syringes that chamber volume is identical, this is the amount for the final mixture that is easy to measure dental bleaching liquid.Equally, injection syringe with multi-cavity chamber can be used for multicomponent bleaching liquid.In order to mix easily and effectively, these two chamber 507a and 507b also preferably contain the roughly the same gel of viscosity.Preferably when two parts bleaching liquid that comes out from two chambers mixed, the bleaching liquid 505 that obtains can have the concentration of required bleach for the oxidant that holds among the first chamber 507a such as the concentration of peroxide.The pH that contains the bleach in the chamber of bleach 507a preferably is no more than 7, so that bleach-stable.Material among the second chamber 507b comprises alkaline matter, and its pH is about 7-12.But, generally do not comprise bleach among the second chamber 507b.In two chambers or syringe that the preferred equivalent of the remaining ingredient of dental bleaching liquid exists, yet also can use the mixture of preparation in advance.
When pushing the piston 507d of dental bleaching allotter 507, the material pressurized among the first chamber 507a and the second chamber 507b is by mixing syringe needle 507c and mixing therein.This mixing makes alkaline matter contact with bleach.Because alkaline matter can make the bleach instability, and makes bleach can more effectively discharge oxonium ion.The pH value of tooth bleaching liquid 505 is preferably greater than the pH value of the dental bleaching liquid that distributes from the syringe of Fig. 3 after the mixing that obtains.
Mixed bleach liquid 505 places the arc 504 of dens supporter 503, and dens supporter 503 places on the tooth 501.This a large amount of oxidants of bleaching liquid 505 meeting rapid release that contain unstable bleach are to bleach rapidly and thoroughly tooth 501.The effect of dens supporter 503 is to make bleaching liquid 505 remain on the tooth 501 and make bleaching liquid 505 away from most of soft tissue 502.
Used abbreviation " cm " expression centimetre among the application.Millimeter is represented in abbreviation " mm " used among the application.
, more specifically say so with reference to Figure 11 and Figure 12 to Figure 15 referring now to accompanying drawing 6, it shows first preferred embodiment of the present invention, generalizedly is expressed as 1010.Embodiment 1010 expressions are used to send the system of teeth whitening material.As shown in Figure 6 and Figure 7, delivery system 1010 has a strip material 1012, is flat basically during these strip material 1012 beginnings, preferably has fillet.
Using or being coated on the strip material 1012 is teeth whitening material 1014.As shown in Figure 8, material 1014 is homogenizing preferably, evenly and continuously is coated on the strip material 1012.But, material 1014 also can be the sandwich of various ingredients or the stage construction that separates, the amorphous mixture of various ingredients, dividing strip or point or other pattern of different component, perhaps comprises the combination of the structure of the oral care substances 1014 that apply continuously along a part of strip material 1012.
As shown in Figure 9, this illustrates a kind of replacement scheme, and strip material 1012 can have the shallow chamber 1018 that is formed at wherein.When material 1014 was coated in the material coated side of strip material 1012, extra material 1014 was filled out in shallow chamber 1018 to store additional material 1014.
Figure 10 and Figure 11 illustrate the delivery system of the present invention 1024 that is applied to a plurality of adjacent teeth and dental surface.A plurality of adjacent teeth 1022 are embedded in the adjacent soft tissue 1020.Adjacent soft tissue among the application is defined as the soft tissue surfaces around the tooth structure, and it comprises: mastoid process, and the gum edge, gingival sulcus, interior gingiva, the tongue gingiva anatomy on buccal surface also comprises combination of mucosa gingiva and sucker.
In Figure 10 and Figure 11, delivery system 1024 comprises strip material 1012 and material 1014 and the material 1014 of adjacency above strip material 1012 sides of tooth 1022.Material 1014 can be applied in advance on the strip material 1012 or by the delivery system operator it is applied on the strip material 1012.In both cases, strip material 1012 all has certain thickness and certain elastic stiffness, so that it can be consistent with the surface profile of adjacent tooth 1022 and adjacent soft tissue 1020.This elasticity strip material has enough elasticity to form the curved shape that centers on a plurality of adjacent teeth.When using this delivery system, this strip material also is easy to make dental surface and slot to feel comfortably cool, and can not make its permanent deformation.Need not impose severe pressure when using this delivery system.
Figure 12 and Figure 13 illustrate delivery system 1024 of the present invention, the adjacent soft tissue 1020 that it is applicable to the front surface and the rear surface of a plurality of adjacent teeth 1022 and is positioned at the front surface of tooth.Delivery system 1024 comprises strip material 1012 and material 1014 and the material 1014 of adjacency above strip material 1012 sides of tooth.
Figure 14 and Figure 15 illustrate and can select the release liner 1027 that uses.Release liner 1027 is attached on the strip material 1012 by material 1014.Material 1014 is on a side of the strip material 1012 of release liner 1027.This side is applied on the dental surface after removing release liner 1027.
Strip material can prevent contacting of saliva and teeth whitening material basically as baffle, and can prevent the teeth whitening material because the lip of user, tongue and other soft tissue former thereby from dental surface elimination and/or corrosion.For in the time that prolongs, in a few minutes to several hours, activate the teeth whitening material to act on the dental surface, it is very important that this elimination and/or corrosion are minimized.Used term " effect " is defined as required variation takes place among the application.For example, if this material is a brightener for tooth, then its bleaching coloured body carries out whitening effect.
Strip material can comprise material such as polymer, natural and synthetic textiles, non-woven fabrics, paillon foil, paper, rubber, and conjugate.Strip material can be monolayer material or multiwalled stacking material.In general, strip material is fluid-tight basically.This strip material can be can reach required elastic stiffness and with the polymer of any kind of teeth whitening active matter such as peroxide compatible.This strip material can comprise the mixture of single kind polymer or multiple polymers.Suitable polymers comprises but is not defined as polyethylene, ethyl vinyl acetate, ethyl vinyl alcohol, the Mylar that polyester such as DuPont produce, the Teflon that fluoroplastics such as DuPont produce, and conjugate.This strip material is polyethylene preferably.The thickness of strip material is generally less than about 1mm, preferably less than about 0.05mm, is more preferably about 0.001mm to about 0.03mm.The thickness of polyethylene strip material is more preferably about 0.005mm to about 0.02mm preferably less than about 0.1mm.
The shape of strip material preferably has the arbitrary shape of fillet." fillet " is defined as without any wedge angle or prominent point.The tooth that preferably one this material of the size of dulcet strip material and a row will bleach is complementary.In general be the row of going up that when user is smiled, can see or a front 6-8 tooth of arranging down.When strip material was pasting the tooth placement, it optionally was complementary with the whole row of going up or following row's tooth.The size of strip material depends on many factors, and it comprises the tooth number that will bleach, the size of tooth and the personal like of user.In general, the length of strip material is extremely about 12cm of about 2cm, and preferably about 4cm is to about 9cm.The width of strip material also depends on many factors, and it comprises that strip material is whether around tooth and two faces of tray covered teeth whether.In general application, the width of strip material is extremely about 4cm of about 0.5cm, and preferably about 1cm is to about 2cm.
Strip material can comprise shallow chamber.When the coating substance side of strip material was coated with material, extra material was filled in shallow indoor to store additional material.In addition, shallow chamber helps to provide a kind of structure of delivery system.This strip material preferably has the shallow chamber of a row.In general, shallow chamber is that about 0.4mm is wide, and 0.1mm is dark.When comprising shallow chamber in the strip material and when using the material of different-thickness, the gross thickness of delivery system is generally less than about 1mm, preferably less than about 0.5mm.
Elastic stiffness is a kind of material property, is the thickness of strip material, the performance that the elastic modelling quantity of width and material combines.Test method is to measure the method for the rigidity of polyolefin film and thin slice.This test bending resistance of the strain gauging sample that invests the horizontal bar end.Laterally the opposite end of this sample strip of extruding makes the part of horizontal bar enter sample strip to settle in the vertical channel in thereon the horizontal stand.The micrometer that is connected on the deformeter is proofreaied and correct the deflection force of representing for gram.Directly the rigidity of reading sample by micrometer is expressed as every centimetre of sample strip width of gram.In the present invention, with the test method of ASTM D2923-95 available from Thwing-Albert Instrument Co.of Philadelphia, the Handle-O-Meter of Pa, the elastic stiffness that model #211-300 goes up the strip material of measuring is lower than about 5g/cm.The elastic stiffness of strip material preferably is lower than about 4g/cm, more preferably less than about 3g/cm, most preferably is that about 0.1g/cm is to about 1g/cm.The elastic stiffness of strip material is constant in normal use basically preferably, does not have very big variation.For example, reach low elasticity rigidity in the above-mentioned scope in order to make this strip material, this strip material does not need to carry out hydration.
This lower rigidity can make strip material cover on the surface profile of tooth, and only need apply very little power; Promptly because strip material to be returned to the tension force of its open and flat substantially shape very little, so can keep the concordance in slit between the lip of strip material and user and adjacent teeth.The elasticity of strip material can make it in the time that prolongs contact with adjacent soft tissue and not have a physics stimulation.Strip material does not need to make it to be close to the pressure of tooth.
Strip material abuts on a plurality of adjacent teeth by the viscosity adhesion that material provides.The viscosity of material and general adhesivity are combined on a plurality of adjacent teeth strip material viscosity, and basically not can with talk, drink water and wait in the relevant face motor process, the friction of tongue and other soft tissue and strip material and produce slip owing to lip.But the cohesive force of itself and tooth is enough low, and user is easy to remove delivery system with finger or fingernail by peeling off strip material.Delivery system is easy to remove from dental surface, and does not need to use instrument, chemical solvent or over-drastic frictional force.Chemical solvent comprises any solvent of common use in oral care product, as alcohol and other safety solvent as can be used for diluting the water of gellant.Over-drastic frictional force is described as using of any type and points or soft utensil such as cotton balls the friction of swab or gauze pad.
For wide be the strip material of 1.5cm, the about 1g-50g of peeling force that all need.The preferably about 5g-40g of peeling force is more preferably about 10g-30g.In order to reach the purpose of user's operation, need low peeling force.Because the non-aggressive of gelatinous mass, so low stripping force is possible.Have only when the elastic stiffness of strip material is hanged down, the caking property of material also can be low.In order to prevent that strip material is returned to its flattened state and prevents it and the surface profile of a plurality of teeth is separated, the caking property of rigidity strip material must increase pro rata with the rigidity of strip material.
Can prepare strip material with several film manufacturing process well known in the art.Preferably form the strip material of making by polyethylene with blowing method or casting.Also can use method such as squeezing and pressing method and other method of the elastic stiffness that does not influence strip material.Material can be the sandwich on the band.
Though invention has been described and explanation in conjunction with many specific embodiments; but; one skilled in the art would recognize that and do not deviating from the application explanation, describe and the situation of claimed principle of the present invention under, can carry out changes and improvements to it.
Under the situation that does not deviate from spirit of the present invention or feature, available other concrete form realizes the present invention.The embodiment that will be understood that description is just in order to illustrate rather than in order to limit the present invention.Therefore, protection scope of the present invention is represented by appended claim, rather than is represented by above-mentioned explanation.All changes in the meaning that is equal to claim and scope all should be within protection scope of the present invention.
Claims (15)
1, a kind of delivery system that is used for the teeth whitening material is distributed to a plurality of adjacent teeth front side is characterized in that: delivery system wherein is transparent and almost is not aware of that described delivery system comprises basically when using:
A., enough elastic strip elastomeric material is arranged, and to form curved shape on a plurality of teeth, when described delivery system was close to tooth, described strip material was easy to make dental surface and slot to feel comfortably cool; With
B. be applied to the teeth whitening material on the described strip material, when described delivery system places on the described dental surface, the described material that brightens contacts with described dental surface, produce active matter from the teeth outwards, the described material that brightens also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time, so that described active matter acts on described dental surface between described strip material and described surface;
Wherein said teeth whitening material comprises following substances:
Bleach, this bleach can discharge oxidant, this oxidant can with reactive organic molecule on people's dental surface and
Thickening agent, this thickening agent comprises a certain amount of polyvinylpyrrolidone and liquid component.
2, delivery system according to claim 1 is characterized in that: the substantially invariable elastic stiffness that is lower than about 5g/cm that the test method of the useful ASTM D2923-95 of described strip material is measured on Handle-O-Meter.
3, delivery system according to claim 1 is characterized in that: described strip material can reclaim from described deformation state under not having the cohesive force that is produced by described teeth whitening material.
4, delivery system according to claim 1 is characterized in that: described strip material is that water is impervious basically.
5, delivery system according to claim 3 is characterized in that: described teeth whitening material is a gel.
6, delivery system according to claim 5 is characterized in that: described teeth whitening material is evenly to be coated in continuously on the described strip material basically.
7, delivery system according to claim 6 is characterized in that: described strip material and apply the gross thickness of teeth whitening material thereon less than about 1mm.
8, delivery system according to claim 7 is characterized in that: the peeling force of strip material that has described teeth whitening material is less than 50g.
9, delivery system according to claim 3 is characterized in that: described strip material has shallow chamber in the coating substance side of this strip material, and the teeth whitening material that is placed in one is arranged in this shallow chamber.
10, delivery system according to claim 1 is characterized in that: described strip material is the polyethylene film of nominal thickness less than about 0.1mm.
11, delivery system according to claim 3 is characterized in that: also comprise release liner.
12, a kind of the teeth whitening material is distributed to the method for a plurality of adjacent teeth front side, it is characterized in that: described method comprises the steps:
A. the teeth whitening material is applied on the strip material, this strip material has enough elasticity, and forming curved shape around a plurality of adjacent teeth, and this strip material is easy to make dental surface and slot to feel comfortably cool and can make its permanent deformation; With
B. the described strip material that has described material on it is applied on described a plurality of adjacent tooth, and described strip material does not have permanent deformation, described material is contacted with described surface, described material produces active matter on described a plurality of adjacent teeth, described material also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time, so that described active matter acts on described surface between described strip material and described a plurality of adjacent teeth;
Wherein said material comprises following substances:
The bleach of about 0.5wt%-60wt%, this bleach comprises and is selected from hydrogen peroxide, urea peroxide, the peroxide of sodium perborate and mistake (two) sodium carbonate, this bleach can discharge oxonium ion, described oxonium ion can with the reactive organic molecule on people's dental surface, this be for produce whitening effect and
The polyvinylpyrrolidone thickening agent of about 0.2wt%-60wt%, this thickening agent comprise a certain amount of polyvinylpyrrolidone and the liquid component that mixes the formation gel, and described liquid component is selected from water, glycerol, propylene glycol, liquid polyethylene glycol, liquid propylene glycol and ethanol.
13, a kind of delivery system that is used for the teeth whitening material is distributed to a plurality of adjacent teeth, it is characterized in that: described delivery system comprises:
A., enough elastic strip elastomeric material is arranged, on a plurality of adjacent teeth, to form curved shape, when described delivery system was close to tooth, described strip material was easy to make dental surface and slot to feel comfortably cool, and described strip material comprises the shallow chamber of a row; With
B. be applied to the teeth whitening material on the described strip material, when described delivery system places on the described dental surface, described material contacts with described surface, on described surface, produce active matter, described material also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time, so that described active matter acts on described surface between described strip material and described surface;
Wherein said teeth whitening material comprises following substances:
The polyvinylpyrrolidone thickening agent of about 0.2%-60%,
The liquid component of about 0.2%-80%,
The bleach of about 0.5%-60% and
The alkaline matter of about 0%-10%; Described polyvinylpyrrolidone thickening agent, described liquid component and described bleach mix the formation gel.
14, a kind of delivery system that is used for the teeth whitening material is distributed to a plurality of adjacent teeth, it is characterized in that: described delivery system comprises:
A., enough elastic strip elastomeric material is arranged, and to form curved shape on a plurality of adjacent teeth, when described delivery system was close to tooth, described strip material was easy to make dental surface and slot to feel comfortably cool and can make its permanent deformation; With
B. be applied to the teeth whitening material on the described strip material, when described delivery system places on the described dental surface, described material contacts with described surface, on described surface, produce active matter, described material also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time, so that described active matter acts on described surface between described strip material and described surface; Described teeth whitening material comprises following substances:
Liquid component,
As the polyvinylpyrrolidone of thickening agent and
Peroxide bleaches, this peroxide bleaches discharge oxidant with bleaching teeth; Described liquid component, described polyvinylpyrrolidone and described peroxide bleaches mix formation gel teeth whitening material, and
C. release liner.
15, a kind of delivery system that is used for the teeth whitening material is distributed to a plurality of adjacent teeth, it is characterized in that: described delivery system comprises:
A. the strip elastomeric material of making by polyethylene; With
B. be applied to the teeth whitening material on the described strip material, when described delivery system places on the described dental surface, described material contacts with described surface, on described surface, produce active matter, described material also produces the viscosity adhesion so that described delivery system keeps its position in the sufficiently long time between described strip material and described surface, so that described active matter acts on described surface, described dental bleaching material can discharge oxidant, this oxidant can with the reactive organic molecule on people's dental surface, described teeth whitening material comprises that it contains the thickening agent of a certain amount of polyvinylpyrrolidone, liquid component and alkaline matter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/770,434 US20030044361A1 (en) | 2001-01-27 | 2001-01-27 | Enamel-safe tooth bleach and method for use |
| US09/770,434 | 2001-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1368034A true CN1368034A (en) | 2002-09-11 |
Family
ID=25088524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01141806.0A Pending CN1368034A (en) | 2001-01-27 | 2001-09-18 | Tooth decolorizer harmless for dental enamel blenching liquid and its using method |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20030044361A1 (en) |
| CN (1) | CN1368034A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102188335A (en) * | 2003-10-14 | 2011-09-21 | 高露洁-棕榄公司 | Tooth whitening composition |
| CN1816312B (en) * | 2003-05-19 | 2013-04-03 | 考里安国际公司 | Hydrogel compositions demonstrating phase separation on contact with aqueous media |
| WO2023082844A1 (en) * | 2021-11-11 | 2023-05-19 | 四川大学 | Dental bleaching guide plate and preparation method therefor |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60226249T2 (en) * | 2001-08-17 | 2009-05-14 | Smithkline Beecham P.L.C., Brentford | STRIPES FOR THE DELIVERY OF A MOIST MAKING MATERIAL |
| US7172423B2 (en) * | 2003-05-27 | 2007-02-06 | Ultradent Products, Inc. | Substantially solid bleaching or treatment compositions in the form of inserts for dental trays, and kits comprising such inserts and trays |
| CA2470463C (en) * | 2004-06-09 | 2012-09-18 | Lornamead Brands, Inc. | Tooth whitening products and methods of making the same |
| US20060171905A1 (en) * | 2005-01-31 | 2006-08-03 | Allred Peter M | Dental bleaching compositions having a protective coating applied thereto |
| US7879269B1 (en) | 2006-09-13 | 2011-02-01 | Rf Micro Devices, Inc. | Ferrite powder optimized for fabrication of ferrite features and related methods |
| US9642687B2 (en) | 2010-06-15 | 2017-05-09 | The Procter & Gamble Company | Methods for whitening teeth |
-
2001
- 2001-01-27 US US09/770,434 patent/US20030044361A1/en not_active Abandoned
- 2001-09-18 CN CN01141806.0A patent/CN1368034A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816312B (en) * | 2003-05-19 | 2013-04-03 | 考里安国际公司 | Hydrogel compositions demonstrating phase separation on contact with aqueous media |
| CN102188335A (en) * | 2003-10-14 | 2011-09-21 | 高露洁-棕榄公司 | Tooth whitening composition |
| US8815216B2 (en) | 2003-10-14 | 2014-08-26 | Colgate-Palmolive Company | Applicator and method for applying a tooth whitening composition |
| US9610148B2 (en) | 2003-10-14 | 2017-04-04 | Colgate-Palmolive Company | Applicator and method for applying a tooth whitening composition |
| WO2023082844A1 (en) * | 2021-11-11 | 2023-05-19 | 四川大学 | Dental bleaching guide plate and preparation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| US20030044361A1 (en) | 2003-03-06 |
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